Why was I charged $5 by Wasabi prior to my first bill?

When a new credit card is added to a Wasabi account, a small authorization hold ($5.00) is sent to verify that the card is valid and hasn’t been reported lost or stolen. Wasabi doesn't proceed with the charge and the charge should disappear within three to five business days. The actual charge (which is based on the amount of usage) for your Wasabi services will be applied 30 days after you submit the card.

This auth hold process is comparable to the approach used by AWS and other leading service providers.